In Rutherford's nuclear model of the atom, the entire positive charge and most of the…
Physics · Class 12 · CBSE — Atoms
In Rutherford's nuclear model of the atom, the entire positive charge and most of the mass of the atom are concentrated in the nucleus. The electrons move in orbits around the nucleus. The nucleus is made of protons and neutrons. Because the nucleus is extremely small as compared to the atom, most of an atom is empty space. The protons and the neutrons are held together in the nucleus by very strong nuclear forces.
In Geiger-Marsden scattering experiment, thin gold foil is used to scatter alpha particles because alpha particles will
- not suffer more than one scattering and gold nucleus is 50 times heavier than alpha particle.
- not suffer more than one scattering and gold nucleus is lighter than alpha particle.
- not suffer more than few scatterings and gold nucleus is 25 times heavier than alpha particle.
- suffer more than one scattering and gold nucleus is 25 times heavier than alpha particle.
Answer
(A) not suffer more than one scattering and gold nucleus is 50 times heavier than alpha particle.
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